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The ParentNode mixin defines the querySelectorAll() method 返回一个 NodeList 表示元素的列表,把当前的元素作为根与指定的选择器组相匹配。

If you need only a single result, consider the querySelector() method instead.


elementList = parentNode.querySelectorAll(selectors);


A DOMString containing one or more selectors to match against. This string must be a valid CSS selector string; if it's not, a SyntaxError exception is thrown. See Locating DOM elements using selectors for more information about using selectors to identify elements. Multiple selectors may be specified by separating them using commas.

Note: Characters which are not part of standard CSS syntax must be escaped using a backslash character. Since JavaScript also uses backslash escaping, special care must be taken when writing string literals using these characters. See Escaping special characters for more information.


A non-live NodeList containing one Element object for each descendant node that matches at least one of the specified selectors.

Note: If the specified selectors include a CSS pseudo-element, the returned list is always empty.


The syntax of the specified selectors string is not valid.


To obtain a NodeList of all of the <p> elements in the document:

var matches = document.querySelectorAll("p");

这个例子返回了所有 class 为 "note" 或者 "alert" 的 div 元素的一个列表:

var matches = document.querySelectorAll("div.note, div.alert");

Here, we get a list of <p> elements whose immediate parent element is a div with the class "highlighted" and which are located inside a container whose ID is "test".

var container = document.querySelector("#test");
var matches = container.querySelectorAll("div.highlighted > p");

This example uses an attribute selector to return a list of the iframe elements in the document that contain an attribute named "data-src":

var matches = document.querySelectorAll("iframe[data-src]");

Here, an attribute selector is used to return a list of the list items contained within a list whose ID is "userlist" which have a "data-active" attribute whose value is "1":

var container = document.querySelector("#userlist");
var matches = container.querySelectorAll("li[data-active=1]");

User notes

querySelectorAll() behaves differently than most common JavaScript DOM libraries, which might lead to unexpected results.


Consider this HTML, with its three nested <div> blocks.

<div class="outer">
  <div class="select">
    <div class="inner">


var select = document.querySelector('.select');
var inner = select.querySelectorAll('.outer .inner');
inner.length; // 1, not 0!

In this example, when selecting ".outer .inner" in the context the <div> with the class "select", the element with the class ".inner" is still found, even though .outer is not a descendant of the base element on which the search is performed (".select"). By default, querySelectorAll() only verifies that the last element in the selector is within the search scope.

The :scope pseudo-class restores the expected behavior, only matching selectors on descendants of the base element:

var select = document.querySelector('.select');
var inner = select.querySelectorAll(':scope .outer .inner');
inner.length; // 0


Specification Status Comment
Living Standard Living standard
Selectors API Level 2
Obsolete No change
Obsolete Initial definition
Selectors API Level 1
Obsolete Original definition


Update compatibility data on GitHub
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
querySelectorAllChrome Full support 1Edge Full support 12Firefox Full support 3.5IE Full support 9
Full support 9
Notes Internet Explorer 8 only supported CSS2 selectors.
Opera Full support 10Safari Full support 4WebView Android Full support YesChrome Android Full support YesFirefox Android Full support YesOpera Android Full support 10.1Safari iOS Full support 3.2Samsung Internet Android Full support Yes


Full support  
Full support
See implementation notes.
See implementation notes.